get_pkginfo() doesn't work for MySQLdb and trac.core

[Jun Omae]

trac.util.get_pkginfo() function retrieves PKG-INFO for the specified module. The function usually is used to provide System Information and Installed Plugins.

However, if the module is non-toplevel module or isn't matched with package name, it doesn't work as expected.

>>> from trac.util import get_pkginfo
>>> import trac, trac.core, MySQLdb, psycopg2
>>> for mod in (trac, trac.core, MySQLdb, psycopg2):
...     mod.__name__, get_pkginfo(mod).get('version', '???')
...
('trac', '1.0.1')
('trac.core', '???')
('MySQLdb', '???')
('psycopg2', '2.0.14')

trac.core and MySQLdb are specified in tags/trac-1.0.1/trac/env.py@:643#L625​ and tags/trac-1.0.1/trac/db/mysql_backend.py@:94#L90​.

We could check that file path is included in SOURCE.txt of the metadata to fix it.